JP3604978B2

JP3604978B2 - Inspection port frame material and inspection port frame using the same

Info

Publication number: JP3604978B2
Application number: JP30675899A
Authority: JP
Inventors: 友幸光川; 久秀片岡; 栄治幸谷
Original assignee: Fukuvi Chemical Industry Co Ltd
Current assignee: Fukuvi Chemical Industry Co Ltd
Priority date: 1999-10-28
Filing date: 1999-10-28
Publication date: 2004-12-22
Anticipated expiration: 2019-10-28
Also published as: JP2001123652A

Description

【０００１】
【発明の属する技術分野】
本発明は、建物の壁や天井に形成された点検口の周縁部分に取り付けられる点検口用の枠材に関するものであり、又該枠材を用いた点検口枠体に関するものである。
【０００２】
【従来の技術】
建物の壁や天井部に設けられた点検口の周縁部分に取り付けられる従来の枠材の一例としては、図１７に示すように、下地部ａにビスｂを用いて固定される固定片ｃの両側に、点検口ｄの内周面ｅを覆う第１の覆片ｆと、前記点検口ｄを閉蓋する蓋板ｇの外周面ｈを当接状態で覆う第２の覆片ｊとを対向状態に平行して突設すると共に、該第１、第２の覆片ｆ，ｊ間に形成された溝部ｋの開放部ｍを遮蔽する遮蔽片ｎが、前記第１の覆片ｆの前部に、屈曲部ｏを介して開閉可能に一体に設けられていた。そして前記遮蔽片ｎが閉じるに伴って、遮蔽片ｎの後面に設けた第１の係合部ｐが前記第２の覆片ｊを、前記蓋板の外周面ｈに押圧するものであり、前記遮蔽片ｎが閉じた時には、前記第２の覆片ｊの弾性復元によって、前記第１の係合部ｐと、前記第２の覆片ｊの前部の溝部ｋ側に設けられた第２の係合部ｓとが係合状態となり、これにより、前記遮蔽片ｎが前記開放部ｍを遮蔽した状態で保持され、且つ該遮蔽片ｎの先端側の部分ｔが、前記下地部ａで後面ｕが支持された状態にある前記蓋板ｇの端縁部分ｖを前側から支持するように構成されていた。
【０００３】
【発明が解決しようとする課題】
しかしながら、前記構成の枠材を用いて構成した点検口枠体ｗにあっては、次のような問題点があった。
▲１▼ 前記第２の覆片ｊが、蓋板ｇの外周面ｈに当接状態にあったことから、前記遮蔽片ｎの閉じ動作は、第２の係合部ｓが第２の覆片ｊを前記外周面ｈに向けて無理に押圧すると共に、前記屈曲部ｏの無理な圧縮変形も生じさせて行われるものであり、遮蔽片を閉じにくい問題があった。又、点検口を通して配線や配管等の保守点検を行なう場合も、前記第２の覆片ｊや屈曲部ｎを無理に変形させることによって第１、第２の係合部ｐ，ｓの係合状態を解除する必要があり、遮蔽片を開きにくい問題があった。
【０００４】
▲２▼ 又、位置が固定的で変形性のない下地部ａと前記遮蔽片の先端側の部分ｔとで端縁部分ｖを挾持して蓋板ｇを保持していたため、点検口枠体の取り付け誤差等によって、閉蓋状態の蓋板にガタツキが発生する恐れがあった。又前記第２の覆片ｊが前後方向で突出する（傾斜していない）ために、該第２の覆片ｊの周方向の連続によって形成された開口部枠ｙの内部に蓋板ｇを円滑に嵌め入れるためには、蓋板の上下方向寸法及び左右方向寸法を、前記開口部枠の上下方向及び左右方向の内法よりも稍小さく設定させざるを得ないことになるが、このことが、閉蓋状態の蓋板に、上下方向や左右方向でガタツキを生じさせる原因となった。
【０００５】
▲３▼ 又前記枠材の固定を、前記第１、第２の覆片ｆ，ｇ間に形成された溝部の底部分（固定片ｃ）でビス固定によって行なうこととしていたため、その固定のためには、ビスの位置決めとドライバーによる回転操作等のために３０ｍｍ前後の溝幅を必要とした。従って、点検口の周縁部分に縁取り幅の大きい枠が取り付いた状態となり、点検口部分の見栄えが悪くなる問題があった。
【０００６】
本発明は、かかる問題点等に鑑みて開発されたものであり、遮蔽片の開閉を容易に行なうことができる点検口用の枠材の提供を目的とするものである。更に進んで、閉蓋状態の蓋板の安定性を向上させる点検口用の枠材の提供を目的とするものである。又、該枠材を用いた点検口枠体の提供を目的をするものである。
【０００７】
【課題を解決するための手段】
前記課題を解決するため、本発明は以下の手段を採用する。
即ち、本発明に係る点検口用の枠材は、壁や天井に形成された点検口の周縁部分に取り付けられる枠材であって、前記点検口の内周面を覆う第１の覆片と前記点検口を閉蓋する蓋板の外周面を覆う第２の覆片とが、前端開放の溝部を両者間に形成するように後部で一体化され、且つ前記第２の覆片が、その後部から前部に向かうにつれて前記第１の覆片側に傾斜してなる本体部材を具えている。そして該本体部材の前記溝部の開放部を遮蔽する遮蔽片が、前記第１の覆片の前部に屈曲部を介して開閉可能に一体に設けられ、又前記遮蔽片が閉じるに伴って、該遮蔽片の後面に設けた第１の係合部が前記第２の覆片を、その傾斜角度を小さくする方向に弾性変形させ、前記遮蔽片が閉じたときには、前記第２の覆片が弾性的に戻ることによって、前記第１の係合部と前記第２の覆片の前記溝部側に設けられた第２の係合部とが係合状態になり、これにより、前記遮蔽片が前記開放部を遮蔽した状態で保持され、且つ該遮蔽片の先端側の部分が、点検口を閉蓋した状態にある前記蓋板の端縁部分を前側から支持する如くなされていることを特徴とするものである。
【０００８】
前記点検口用の枠材は、前記本体部材の後部に、閉蓋状態にある前記蓋板の後面を支持する蓋板支持片が設けられたものとして構成するのがよい。
【０００９】
又前記各点検口用の枠材において、前記第２の覆片の前部には、前記溝部側と反対側に突部を設け、前記突部の先端が、板材を所要に切断して前記蓋板を形成する場合にその切断寸法を設定する定規として機能するように構成するのがよい。
【００１０】
又前記各点検口用の枠材において、前記第２の覆片の前部に、前記溝部側と反対側に突部を設け、前記第１の係合部と第２の係合部とが係合した状態で前記突部が、点検口を閉蓋した状態にある前記蓋板の端縁部分の前面と係合するように構成するのがよい。
【００１１】
又前記点検口用の枠材が蓋板支持片を具える場合、前記蓋板支持片の、前記蓋板の後面を支持する支持片部が、その基端側から先端側に向かって前方に傾斜し、前記先端側で前記後面に接し且つ前記基端側が前記後面に浮いた状態となり、該浮いた状態になることに伴う前記支持片部のバネ作用によって、閉じた状態の前記遮蔽片が前記蓋板を後方向に向けて弾性的に押圧するように構成するのがよい。
【００１２】
又前記点検口用の枠材が蓋板支持片を具える場合、前記本体部材の後部に、前記溝部の幅方向に所要間隔で突片を対向状態に突設することにより、両突片間に係合溝を形成し、又前記蓋板支持片は、該係合溝内に押し込み可能の係合突部を具え、該係合突部を所要量押し込んだ状態で、該係合突部と係合溝との係合によって前記蓋板支持片の脱落が阻止されるようになし、又前記蓋板支持片の、前記蓋板の後面を支持する支持片部は、その基端側から先端側に向かって前方に傾斜し、前記先端側で前記後面に接し且つ前記基端側が前記後面に浮いた状態となり、該浮いた状態になることに伴う前記支持片部のバネ作用によって、閉じた状態の前記遮蔽片が前記蓋板を後方向に向けて弾性的に押圧するように構成するのがよい。
【００１３】
又前記点検口用の枠材が蓋板支持片を具える場合、前記第１の覆片は、その後部で後方に延長された延長片を具えたものとし、該延長片の前側の部分が前記突片の一方を構成すると共に、該延長片の後側の部分が、前記点検口の周縁部分への固定部を構成するようになすのがよい。
【００１４】
又本発明に係る点検口枠体は、前記したいずれかの点検口用の枠材を、前記溝部を前側に向けて正方形状又は長方形状に枠組みし、上下左右の枠材の前記遮蔽片が独立して開閉可能とされており、又、前記傾斜した第２の覆片が周方向に連続して形成する開口枠部の内部に、その前端開口を通して前記蓋板を嵌め入れ可能となされており、前記第１の係合部と第２の係合部とが係合して遮蔽片が閉じた状態において、前記点検口を閉蓋した状態にある前記蓋板の端縁部分を前側から支持する如くなされ、又前記蓋板の外周面の後端縁が、傾斜した前記第２の覆片の傾斜外面に当接するように構成されていることを特徴とするものである。
【００１５】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。
図１〜２において本発明に係る点検口用の枠材１は、壁Ｗに設けられた点検口２の周縁部分に取り付けられる合成樹脂製の枠材（例えば押出成形によって製作される）であって、前記点検口２の内周面３を覆う第１の覆片５と前記点検口２を閉蓋する蓋板６の外周面７を覆う第２の覆片９とが、前端開放の溝部１０を両者間に形成するように後部で連結片１１により連結一体化され、且つ前記第２の覆片９が、その後部１２から前部１３に向かうにつれて前記第１の覆片５側に傾斜してなる、断面コ字状の本体部材１５を具えている。
【００１６】
本実施の形態においては、前記本体部材１５の後部（本実施の形態においては、前記連結片１１）に、前記点検口２を閉蓋した状態にある前記蓋板６の後面１６を支持する蓋板支持片１７が設けられている。又前記本体部材１５の前記第１の覆片５は、その後部で後方に延長された延長片１９を具えており、該延長片１９の後側の部分が、前記点検口２の内周縁部分をなす下地部２０への釘着用の固定部２１とされている。又該第１の覆片５の前部２２には、前記点検口２の縁部分を前側から被覆でき且つ後方に突出する突出部２３を先端に具えたＬ字状をなす化粧片２４が屈曲形成されている。
【００１７】
前記蓋板支持片１７は本実施の形態においては、図１〜２に示すように、本体部材１５の後部に設けた係合溝２５内に所要量押し込み可能の係合突部２６を端部分に具えており、該係合突部２６が前記係合溝２５内に所要量押し込まれた状態で本体部材１５の後部に設けられている（図２）。
【００１８】
前記係合溝２５は、前記延長片１９の前側部分としての突片２７と、該突片２７に対向して前記連結片１１に突設された突片２９との間で形成されており、該両突片２７，２９の内面には対向状態で、係合溝の溝底３０に面する係合面３１（図２（Ｂ））を複数段に有している。又前記係合突部２６は、その対向面部に、前記係合面３１と係合し得る係合面３２（図２（Ｂ））を複数段に有している。
【００１９】
そして前記蓋板支持片１７は、前記構成を有する係合突部２６の基端に、前記連結片１１と略平行する屈曲片３３が略直角に連設されると共に、該屈曲片３３の先端で、前記蓋板６の後面１６に向けて突出する突出片３５が略直角に連設され、且つ該突出片３５の先端で、基端側３６から先端側３７に向かって前方に傾斜する支持片部３９が略直角に連設されている。
【００２０】
かかる構成を有する蓋板支持片１７は、図２に示すように、前記係合突部２６を前記係合溝２５内に所要量押し込んで前記係合面３１，３２を係合させた状態において、前記支持片部３９が、その先端側３７で前記後面１６に接し且つ前記基端側３６が前記後面１６に浮いた状態となり、該浮いた状態になることに伴い、支持片部３９のバネ作用が得られる。
【００２１】
又前記溝部１０の開放部４０を遮蔽する遮蔽片４１が、前記第１の覆片５の前部２２に屈曲部４２を介して開閉可能に一体に設けられている。そして該遮蔽片４１の後面には、本実施の形態においては前記屈曲部４２に近接させて、遮蔽片４１の長さ方向に延長する状態で、突条としての第１の係合部４３が設けられており、該遮蔽片４１が閉じた状態において、図２に示すように、該第１の係合部４３が、前記第２の覆片９の前部１３の前記溝部１０側に設けられた突部としての第２の係合部４６と係合状態になり得る。
【００２２】
そして図２（Ｃ）に示すように、前記第２の係合部４６の前端面部分は円弧面４７として形成され、係合面４９を後側に有している。又前記第１の係合部４３は、前記係合面４９と係合し得る係合面５０を前端部分として有している。
【００２３】
然して前記遮蔽片４１が図３に示すように閉じるに伴い、前記第１の係合部４３の後端部分５１が前記第２の係合部４６の前記円弧面４７を押圧し、これにより前記第２の覆片９が、図４に示すようにその傾斜角度を小さくする方向に弾性変形する。そして該遮蔽片４１が図２に示すように閉じたときには、前記第２の覆片９が弾性的に戻ることによって、前記第１の係合部４３と前記第２の係合部４６とが、両係合面４９，５０で係合状態になり、これにより、前記遮蔽片４１が前記開放部４０を遮蔽した状態で保持される。
【００２４】
そして遮蔽片４１が開放部４０を遮蔽した状態において、図２に示すように、該遮蔽片４１の先端側の部分５２が、前記点検口２を閉蓋した状態にある前記蓋板６の端縁部分５３を前側から支持する如くなされており、これにより、遮蔽片の先端側の部分５２と前記蓋板支持片１７の支持片部３９との間で蓋板６の端縁部分５３が弾性的な挾持状態となる。
【００２５】
又前記遮蔽片４１の先端には、図１〜２に示すように、前記第１の係合部４３と第２の係合部４６との係合状態を解除するためにドライバー等の工具先端を挿入するための条溝５５が設けられている。
【００２６】
特に本実施の形態においては、図２に示すように、前記第２の覆片９の前部１３に、前記溝部１０側と反対側に突部５６が設けられており、該突部５６の先端５７は、後述のように、石膏ボード等の板材を所要に切断することによって前記蓋板６を形成する場合に、その切断寸法を設定する定規として機能し得る。
【００２７】
前記構成を有する枠材１を用いて構成された図５〜７に示す点検口枠体５９は、前記点検口２の周縁部分６０を被覆した状態で装着されるものであり、所要長さに切断された上下左右の枠材６１，６２，６３，６５を、その溝部１０を前側に向けて、正方形状又は長方形状に枠組み（図５においては、正方形状に枠組みされている）して構成されている。
【００２８】
その具体的な構成を説明すれば、前記した上下左右の枠材６１，６２，６３，６５は、夫々その両端部が４５度の角度で斜めに切り落とされており、隣り合う枠材の端部６６，６７相互は、図９に示すように、前記化粧片２４の後側溝部６９に嵌め込まれるＬ字状接合部材７０を用いて溶着や接着等の手段により接合一体化され、これにより、正方形状の枠本体７１が構成されている。
【００２９】
そして前記構成の蓋板支持片１７が、その係合突部２６が前記係合溝２５に係合せしめられて前記枠本体７１に取り付けられるのであるが、その際図６〜７に示すように、該枠本体７１のコーナ部分にはＬ字状の蓋板支持片１７ａが取り付けられると共に、隣り合う該蓋板支持片１７ａ，１７ａ間には直線状の蓋板支持片１７ｂが取り付けられる。
【００３０】
前記Ｌ字状の蓋板支持片１７ａは、図１０に示すように、前記屈曲片３３と突出片３５とがＬ字状に連結一体化されており、そのＬ字の両辺部を構成する前記屈曲片３３，３３の端部側には、前記係合突部２６，２６が突設されている。又前記突出片３５，３５には、独立状態で、前記支持片部３９，３９が突設されている。
【００３１】
かかる構成を有するＬ字状の蓋板支持片１７ａは図６〜７に示すように、その両端の係合突部２６，２６が前記係合溝２５，２５に夫々押し込まれることにより、前記枠本体７１に取り付けられる。このように構成されたＬ字状の蓋板支持片１７ａは、前記枠本体７１のコーナ部分を補強する補強部材としても機能することになる。
【００３２】
前記構成を有する点検口枠体５９を用いて、前記点検口２を前記蓋板６で閉蓋するには図１１、図２〜３に示すように、該点検口枠体５９を点検口２に嵌め入れ、前記化粧片２４の前記突出部２３を、点検口の縁部分の前面７５に当接させると共に、この状態で、前記固定部２１を下地部２０にネジ釘７６で固定する。なお、点検口枠体５９がこのように取り付けられた状態においては、前記遮蔽片４１を、図１１に示すように開いた状態にしておく。この状態においては、前記第２の覆片９が傾斜状態にあるため、該第２の覆片９が周方向に連続して形成された正方形状の開口枠部７７は、図１１に示すように、前端に向かって末広がりの状態にある。
【００３３】
前記蓋板６は、図１１、図５に示すように、前記開口枠部７７の内部に嵌め入れられてその後面１６が前記蓋板支持片１７の支持片部３９で支持される正方形板状に構成されており、図２に示すように、該蓋板６の外周面７は蓋板の前面７９と直角をなしている。
【００３４】
該蓋板６は、石膏ボード等の板材を、施工現場で正方形状に切断して形成される場合がある。そのときは、前記第２の覆片９の前部に設けた前記突部５６の先端５７（図２）を定規として機能させ、切断寸法を所要に設定することにより、寸法精度のよい蓋板を形成できることになる。図１０によって説明すれば、上下方向及び左右方向の切断寸法を、上下の突部の先端５７，５７間の距離Ｌ１及び左右の突部の先端５７，５７間の距離Ｌ２によって設定する。又該蓋板６の肉厚は、かかる構成の蓋板６を図７〜８に示すように、前記正方形状の開口枠部７７の内部にその前端開口８０を通して嵌め入れ且つその後面１６を前記蓋板支持片１７の支持片部３９の先端側３７で支持させたときに、図８に示すように、該蓋板の外周面７の後端縁８１が前記第２の覆片９の傾斜外面８２にその後側部で当接し、且つ前記外周面７の前端縁８３が前記突部５６の稍後側に位置するように設定する。
【００３５】
然して前記構成の蓋板６で点検口２を閉蓋するには、図１１、図８に示すように、該蓋板６を、正方形状の開口枠部７７に嵌め入れる。該開口枠部７７に嵌め入れられた蓋板６は、その外周面７の後端縁８１で前記傾斜した前記第２の覆片９の傾斜外面（第２の覆片９の、前記溝部１０と反対側の面）８２にその後側部分で当接した状態となり、且つ前記外周面７の前端縁８３は、前記突部５６の稍後側に位置する。そして該外周面７と第２の覆片９との間には、前端に向かって溝幅が大きくなる楔状溝部８５が形成される。この状態で前記遮蔽片４１を閉じるのであるが、それに伴い図３に示すように、前記第１の係合部４３の前記後端部分５１が前記第２の係合部４６の前記円弧面４７を押圧し、これにより前記第２の覆片９が、図４に示すようにその傾斜角度を小さくする方向に弾性変形する。そして該遮蔽片４１が図２に示すように閉じたときには、前記第２の覆片９が弾性的に戻ることによって、前記第１の係合部４３と前記第２の係合部４６とが、両係合面４９，５０で係合状態になり、これにより、前記遮蔽片４１が前記開放部４０を遮蔽した状態で保持されることとなる。
【００３６】
そして前記遮蔽片４１が閉じた状態において、該遮蔽片の先端側の部分５２が前記蓋板の端縁部分５３の前面５３ａを被覆すると共に、該先端側の部分の後部８６が、前記蓋板６を前記蓋板支持片１７の支持片部３９に向けて押圧する。この押圧は、前記支持片部３９が、傾斜した状態でその先端側３７が蓋板６の後面１６に接し、その基端側３６が該後面１６に浮いた状態で行なわれる。従って該押圧は、支持片部３９の弾性変形を伴って弾性的に行なわれることになる。それ故蓋板６の端縁部分５３は、前記蓋板支持片１７の支持片部３９と前記遮蔽片４１の先端側の部分５２とによって、ガタツキのない状態で安定的に弾性挾持されることになり、図１２に示すように、蓋板６の安定した閉蓋状態が保たれることになる。
【００３７】
又、前記点検口２を通して配線や配管等の保守点検を行なうに際しては、前記閉じた状態にある遮蔽片４１の先端の条溝５５（図２）に例えばドライバの先端を挿入して該遮蔽片４１を手前（前方）に倒すように操作し、前記第１の係合部４３と第２の係合部４６との係合状態を解除して遮蔽片４１を開く。これにより前記正方形状の開口枠部７７は、前端に向かって末広がりの状態（蓋板を嵌め入れる時の状態）に戻るので、前記蓋板６を容易に取り外すことができる。
【００３８】
なお本実施の形態においては、前記のように、係合溝２５内への係合突部２６の押し込み量を所要に設定可能となされているため、本実施の形態に係る点検口枠体５９によるときは、例えば厚さの異なる２種類の蓋板を前記開口枠部７７内に嵌め入れて点検口２を閉蓋することができる。そのためには、例えば点検口枠体を出荷する際に、施工現場における蓋板の肉厚が厚い場合を想定して、図２に示すように、前記係合溝２５内への前記係合突部２６の押し込み量を小さめに設定しておく。施工現場おいて、厚肉の蓋板を用いる場合は、図２に示すように、該蓋板６を前記開口枠部７７内に嵌め入れて点検口２を閉蓋することができる。一方、薄肉の蓋板を用いる場合は、図１３に示すように、前記係合突部２６を前記係合溝２５内に奥まで十分に押し込むことによって、該蓋板６を前記正方形状の開口枠部７７の内部に嵌め入れ且つ遮蔽片４１を閉じることによって、点検口２を閉蓋できる。
【００３９】
〔その他の実施の形態〕
（１）図１４は、前記第１の係合部４３と第２の係合部４６とが係合して前記遮蔽片４１が閉じた状態において、前記第２の覆片９の前部に設けた突部５６が、前記点検口２を閉蓋した状態にある前記蓋板６の端縁部分５３の前面５３ａと係合するように構成した場合を示している。このように構成したときは、蓋板６は、前記第１の係合部４３と第２の係合部４６との係合力に加えて、該端縁部分の前側５３ａと前記突部５６との係合力が付加されるために、遮蔽片４１が閉じた状態において、蓋板６の一層安定的な閉蓋状態が得られることになる。なお図１４において一点鎖線で示す第２の覆片９は、その自由状態を示している。
【００４０】
（２）本発明に係る点検口用の枠材及び点検口枠体は、建築物の壁だけではなく、天井に形成される点検口に対しても応用することができる。
【００４１】
（３）本発明に係る点検口枠体を点検口の周縁部分に固定する手段は、第１の覆片に延長した前記固定部２１を下地部２０に釘着して行なうことの他、図１５に示す従来施工のように、溝部１０の底部分８７で、下地部２０にネジ釘８９で固定する手段を採用してもよい。
【００４２】
（４）又蓋板６の後面１６を支持する前記蓋板支持片１７は、その係合突片を係合溝に押し込む前記係合手段によって本体部材に設けることの他、あるタイプの点検口枠体において蓋板の肉厚が一種類であるときは、図１５に示すように、該蓋板支持片１７を本体部材に一体に設けることとしてもよい。
【００４３】
（５）本発明に係る点検口用の枠材１は、前記蓋板支持片１７を具えないものとして構成されることがある。この場合は、例えば図１６に示すように、蓋板６の後面１６が下地部７９で支持される。なお同図において枠材１は、溝部１０の底部分８７で、下地部７９にネジ釘８９で固定されている。
【００４４】
【発明の効果】
本発明は以下の如き優れた効果を奏する。
（１）本発明によるときは、本体部材を構成する第２の覆片が、その後部から前部に向かうにつれて前記第１の覆片側に傾斜する傾斜片として構成されているため、蓋板の外周面と第２の覆片との間に、該第２の覆片をその傾斜角度を小さくする方向に弾性変形させて逃がすための間隙を形成できる。これにより、点検口を蓋板で閉蓋した状態で前記遮蔽片を閉じる操作を、前記第２の覆片をその傾斜角度が小さくなる方向に弾性変形させて行なうことができる。従って、遮蔽片を無理なく閉じることができると共に、閉じた後においては前記第２の覆片が弾性的に戻ることに伴い、遮蔽片に設けた第１の係合部と第２の覆片に設けた第２の係合部との確実な係合状態が得られ、遮蔽片を遮蔽状態で保持できることになる。これによって、前記閉蓋状態にある蓋板を、該遮蔽片の先端側の部分と蓋板支持片との間で安定的に保持できることになる。又配線や配管等の保守点検に際して前記蓋板を取り外すときは、前記第２の覆片の弾性的な変形によって遮蔽片を開くことが容易である。
【００４５】
（２）傾斜した第２の覆片が周方向に連続して形成された開口枠部の内部に蓋板を嵌め入れる構成であるため、該蓋板の外周面の後端縁を、前記傾斜した第２の覆片の傾斜外面に当接状態となし得、この状態で前記遮蔽片を閉じることによって蓋板を閉蓋状態で保持できる。従って、第２の覆片が前後方向で突出する（傾斜していない）前記従来の点検口枠体による場合のように、蓋板の製作誤差によって、閉蓋状態の蓋板に上下方向や左右方向でガタツキを生じさせるといった問題を発生させることがない。
【００４６】
（３）前記第２の覆片の前部に、前記本体部材の溝部側と反対側に突部を設け、該突部の先端が、板材を所要に切断して前記蓋板を形成する場合にその切断寸法を設定する定規として機能するように構成するときは、前記蓋板を、現場作業によって板材を所要に切断して形成する場合、前記定規を利用して切断寸法を設定することにより、前記開口枠部の内部に嵌め入れることのできる所定寸法の蓋板を形成することが容易である。
もしもこのような突部が設けられていない場合は、前記第２の覆片の周方向の連続によって形成された前記開口枠部が前端に向かって末広がりとなるように傾斜しているために、誤って、末広がりの先端を定規にして切断寸法を設定する恐れがある。このように切断して蓋板を形成した場合は、寸法が合わないために、該蓋板を開口枠部内に挿入できないことになってしまう。前記突部は、このような不具合を解消するために役に立つ。
【００４７】
（４）前記第１の係合部と第２の係合部とが係合して前記遮蔽片が閉じた状態において、前記第２の覆片の前部に設けた突部が、閉蓋状態にある蓋板の端縁部分の前面と係合するように構成した場合は、前記第１の係合部と第２の係合部との係合力に、該端縁部分の前面と前記突部との係合力が付加されるために、遮蔽片が閉じた状態において、蓋板の一層安定的な閉蓋状態が得られることになる。これによって、天井に設けた点検口に本発明に係る点検口枠体を取り付ける場合も、蓋板を安定的に保持できることとなる。
【００４８】
（５）本発明に係る点検口用の枠材が、閉蓋状態にある蓋板の後面を支持する蓋板支持片を具える場合、前記蓋板支持片の、前記蓋板の後面を支持する支持片部が、その基端側から先端側に向かって前方に傾斜し、前記先端側で前記後面に接し、且つ前記基端側が前記後面に浮いた状態となるように構成した場合は、該支持片部が傾斜状態で蓋版の後面に接することに伴うバネ作用によって、前記遮蔽片を閉じたときに、その先端側の部分が前記蓋板を弾性的に後方向に押圧する状態となる。従って、該蓋板を、前記蓋板支持片と遮蔽片との間でガタツキなく安定的に保持して、蓋板の閉蓋状態の安定性向上を達成できることになる。これは、蓋板の縁部分を、位置が固定的で変形性のない下地部後面と前記遮蔽片の先端側の部分とで挾持して蓋板を保持する前記従来の点検口枠体によっては達成できない効果である。
【００４９】
（６）前記本体部材の後部に対向状態に突設した突片間で係合溝を形成し、前記蓋板支持片に、該係合溝内に押し込み可能の係合突部を設ける構成とした場合は、該係合突部と係合溝との係合によって蓋板支持片を本体部材に安定的に取り付けることが可能であると共に、係合溝内への係合突部の押し込み量の所要の設定により、前記蓋板支持片と、閉じた状態の遮蔽片との間の間隔を調節することができ、これにより、厚さの異なる複数種類の蓋板の保持が可能となる。
【００５０】
（７）本体部材を構成する第１の覆片が、その後部で後方に延長された延長片を具えるときは、該延長片によって、前記係合溝の形成と点検口枠体の固定部の形成とを、構造簡素に達成できることとなる。
【００５１】
（８）延長片の後側の部分としての固定部で、点検口枠体を点検口の周縁部分に固定する場合は、前記従来の点検口枠体におけるように、遮蔽片で閉じられる溝部の底部分で点検口枠体をビス固定するのとは異なり、本体部材の溝部の幅を小さく設定することができ、これにより、点検口の周縁部分を縁取る縁取り幅を小さくしてこの縁取りを極力目立ちにくくでき、点検口部分の見栄えを向上できることになる。
【図面の簡単な説明】
【図１】本発明に係る枠材を示す分解斜視図である。
【図２】その使用状態を示す断面図である。
【図３】遮蔽片を閉じる際の作用を説明する断面図である。
【図４】遮蔽片を閉じる際の作用を説明する断面図である。
【図５】本発明に係る点検口枠体を使用状態で示す正面図である。
【図６】点検口枠体を使用状態で示す背面図である。
【図７】点検口枠体の使用状態を示す部分斜視図である。
【図８】点検口枠体の開口枠部の内部に蓋板を嵌め入れた状態を示す断面図である。
【図９】隣り合う枠材の端部相互をＬ字状接合部材で接合一体化した状態を示す斜視図である。
【図１０】点検口枠体を分解して示す部分斜視図である。
【図１１】点検口枠体に蓋板を嵌め入れた状態を示す断面図である。
【図１２】点検口枠体に蓋板を嵌め入れると共に遮蔽片を閉じた状態を示す断面図である。
【図１３】本発明に係る枠材の他の使用状態を示す断面図である。
【図１４】本発明に係る枠材の他の態様をその使用状態で示す部分断面図である。
【図１５】本発明に係る枠材のその他の態様を使用状態で示す断面図である。
【図１６】本発明に係る枠材のその他の態様を使用状態で示す断面図である。
【図１７】従来の枠材をその使用状態で示す断面図である。
【符号の説明】
１枠材
２点検口
３点検口の内周面
５第１の覆片
６蓋板
７蓋板の外周面
９第２の覆片
１０溝部
１１連結片
１５本体部材
１６蓋板の後面
１７蓋板支持片
２５係合溝
２６係合突部
３９支持片部
４１遮蔽片
４２屈曲部
４３第１の係合部
４６第２の係合部
５６突部
５７突部の先端
５９点検口枠体
６０点検口の周縁部分[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a frame material for an inspection port attached to a peripheral portion of an inspection port formed on a wall or a ceiling of a building, and also relates to an inspection port frame using the frame material.
[0002]
[Prior art]
As an example of a conventional frame material attached to a peripheral portion of an inspection port provided on a wall or a ceiling of a building, as shown in FIG. 17, a fixing piece c fixed to a base portion a using a screw b is used. On both sides, a first cover f covering the inner peripheral surface e of the inspection port d and a second cover j covering the outer peripheral surface h of the cover plate g closing the inspection port d in a contact state. A shielding piece n protruding in parallel with the facing state and shielding the opening m of the groove k formed between the first and second covering pieces f and j is formed of the first covering piece f. In the front part, it was integrally provided so that opening and closing was possible via the bending part o. Then, as the shielding piece n closes, a first engagement portion p provided on the rear surface of the shielding piece n presses the second covering piece j against the outer peripheral surface h of the lid plate, When the shielding piece n is closed, the elasticity of the second covering piece j restores the first engaging portion p and the second covering piece j provided on the front side of the groove k on the side of the groove k. 2 is engaged with the engaging portion s, whereby the shielding piece n is kept in a state of shielding the opening m, and the tip portion t of the shielding piece n is moved to the base portion a Thus, the end portion v of the lid plate g in which the rear surface u is supported is supported from the front side.
[0003]
[Problems to be solved by the invention]
However, the inspection port frame w configured using the frame material having the above configuration has the following problems.
{Circle around (1)} Since the second cover piece j is in contact with the outer peripheral surface h of the cover plate g, the closing operation of the shield piece n is performed when the second engaging portion s This is performed by forcibly pressing the piece j toward the outer peripheral surface h and at the same time causing the forcible compression deformation of the bent portion o, and there is a problem that it is difficult to close the shielding piece. Also, when performing maintenance and inspection of wiring, piping, and the like through the inspection port, the first and second engagement portions p and s can be engaged by deforming the second cover piece j and the bent portion n forcibly. It was necessary to cancel the state, and there was a problem that it was difficult to open the shielding piece.
[0004]
{Circle around (2)} Since the edge portion v is held between the base portion a, which is fixed and has no deformation, and the portion t on the tip end side of the shielding piece, the lid plate g is held. There is a possibility that rattling may occur on the lid plate in the closed state due to a mounting error or the like. Since the second cover j protrudes in the front-rear direction (not inclined), the cover plate g is placed inside the opening frame y formed by the circumferential continuation of the second cover j. In order to fit smoothly, the vertical dimension and the horizontal dimension of the lid plate have to be set slightly smaller than the vertical dimension and the horizontal dimension of the opening frame. However, this causes rattling of the lid plate in the closed state in the vertical and horizontal directions.
[0005]
{Circle around (3)} Since the fixing of the frame material is performed by screw fixing at the bottom portion (fixing piece c) of the groove formed between the first and second cover pieces f and g, the fixing of the fixing is performed. For this purpose, a groove width of about 30 mm was required for screw positioning and rotation operation by a driver. Therefore, there is a problem that a frame having a large rim width is attached to the peripheral portion of the inspection opening, and the appearance of the inspection opening becomes poor.
[0006]
SUMMARY OF THE INVENTION The present invention has been developed in view of the above-described problems and the like, and has as its object to provide a frame material for an inspection port that can easily open and close a shielding piece. It is still another object of the present invention to provide a frame material for an inspection port for improving the stability of a lid plate in a closed state. It is another object of the present invention to provide an inspection port frame using the frame material.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention employs the following means.
That is, the inspection port frame material according to the present invention is a frame material attached to a peripheral portion of the inspection port formed on a wall or a ceiling, and a first cover piece that covers an inner peripheral surface of the inspection port. A second cover piece for covering the outer peripheral surface of the lid plate for closing the inspection opening is integrated at a rear portion so as to form a groove with an open front end therebetween, and the second cover piece is thereafter And a main body member that is inclined toward the first cover side from the section toward the front section. A shielding piece for shielding the opening of the groove of the main body member is integrally provided at the front of the first covering piece so as to be openable and closable via a bent portion, and as the shielding piece closes, A first engaging portion provided on a rear surface of the shield piece elastically deforms the second cover piece in a direction to reduce the inclination angle, and when the shield piece is closed, the second cover piece is By elastically returning, the first engagement portion and the second engagement portion provided on the groove side of the second cover piece are brought into an engagement state, whereby the shielding piece is It is characterized in that the opening portion is held in a shielded state, and the front end portion of the shielding piece supports the edge portion of the lid plate in a state where the inspection opening is closed from the front side. It is assumed that.
[0008]
It is preferable that the frame member for the inspection port is configured such that a cover plate supporting piece for supporting a rear surface of the cover plate in a closed state is provided at a rear portion of the main body member.
[0009]
Further, in the frame material for each of the inspection ports, a protrusion is provided on a front portion of the second cover piece on a side opposite to the groove side, and a tip of the protrusion cuts a plate material as required. When the cover plate is formed, the cover plate is preferably configured to function as a ruler for setting the cutting dimension.
[0010]
In each of the inspection port frame members, a projection is provided on a front portion of the second cover piece on a side opposite to the groove side, and the first engagement portion and the second engagement portion are provided. It is preferable that the projection is configured to engage with the front surface of the edge portion of the lid plate in a state where the inspection port is closed in the engaged state.
[0011]
In the case where the frame material for the inspection opening includes a cover plate support piece, the support piece portion of the cover plate support piece that supports the rear surface of the cover plate moves forward from the base end side toward the front end side. Inclined, the distal end side is in contact with the rear surface, and the base end side is floating on the rear surface, and the shielding piece in the closed state is closed by the spring action of the support piece portion accompanying the floating state. It is preferable that the lid plate is elastically pressed rearward.
[0012]
In the case where the frame material for the inspection port includes a cover plate supporting piece, a projecting piece is provided at a rear portion of the main body member at a required interval in a width direction of the groove so as to face each other, so that the distance between the both projecting pieces is increased. The cover plate support piece has an engagement protrusion which can be pushed into the engagement groove, and the engagement protrusion is pushed in a required amount. The cover plate support piece is prevented from dropping off by the engagement with the engagement groove, and the support piece portion of the cover plate support piece that supports the rear surface of the cover plate is provided from the base end side thereof. It is inclined forward toward the distal end side, contacts the rear surface at the distal end side, and the base end side floats on the rear surface, and is closed by the spring action of the support piece portion accompanying the floating state. It is preferable that the shielding piece in the folded state elastically presses the lid plate rearward.
[0013]
Further, when the frame material for the inspection opening includes a cover plate support piece, the first cover piece is provided with an extension piece extended rearward at a rear portion thereof, and a front portion of the extension piece is provided. It is preferable that one of the protruding pieces is formed, and a rear portion of the extension piece forms a fixing portion to a peripheral portion of the inspection port.
[0014]
In addition, the inspection port frame body according to the present invention, the frame material for any one of the inspection ports described above, framed in a square or rectangular shape with the groove portion facing the front side, and the shielding pieces of the upper, lower, left, and right frame materials are The cover plate can be opened and closed independently, and the cover plate can be fitted into the opening frame portion formed continuously by the inclined second cover piece in the circumferential direction through the front end opening. In a state in which the first engagement portion and the second engagement portion are engaged with each other and the shielding piece is closed, an edge portion of the lid plate in a state where the inspection opening is closed from the front side. And a rear end edge of an outer peripheral surface of the lid plate is configured to abut against an inclined outer surface of the inclined second cover piece.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2, a frame member 1 for an inspection port according to the present invention is a frame member made of a synthetic resin (manufactured by, for example, extrusion) attached to a peripheral portion of an inspection port 2 provided on a wall W. The first cover 5 covering the inner peripheral surface 3 of the inspection port 2 and the second cover 9 covering the outer peripheral surface 7 of the cover plate 6 closing the inspection port 2 are formed by a groove having an open front end. The second cover piece 9 is connected and integrated by a connection piece 11 at a rear portion so as to form a portion 10 therebetween, and the second cover piece 9 is inclined toward the first cover piece 5 from the rear portion 12 to the front portion 13. The main body member 15 has a U-shaped cross section.
[0016]
In the present embodiment, a lid that supports a rear surface 16 of the lid plate 6 in a state where the inspection port 2 is closed is provided at a rear portion of the main body member 15 (in the present embodiment, the connecting piece 11). A plate support piece 17 is provided. Further, the first cover piece 5 of the main body member 15 has an extension piece 19 extended rearward at a rear portion thereof, and a rear portion of the extension piece 19 is an inner peripheral edge portion of the inspection port 2. The fixing portion 21 is used for attaching nails to the base portion 20 which forms the following. Further, an L-shaped decorative piece 24 having a projection 23 which can cover an edge portion of the inspection port 2 from the front side and is provided at a front end thereof is bent at a front portion 22 of the first cover piece 5. Is formed.
[0017]
In the present embodiment, as shown in FIGS. 1 and 2, the cover plate support piece 17 has an engagement protrusion 26 which can be pushed into a required amount into an engagement groove 25 provided at a rear portion of the main body member 15. The engaging protrusion 26 is provided at a rear portion of the main body member 15 in a state of being pushed into the engaging groove 25 by a required amount (FIG. 2).
[0018]
The engagement groove 25 is formed between a protruding piece 27 as a front side portion of the extension piece 19 and a protruding piece 29 protruding from the connecting piece 11 so as to face the protruding piece 27, The inner surfaces of the two protruding pieces 27 and 29 have an engaging surface 31 (FIG. 2B) facing the groove bottom 30 of the engaging groove in a plurality of stages in an opposed state. The engaging projection 26 has an engaging surface 32 (FIG. 2 (B)) which can be engaged with the engaging surface 31 in a plurality of stages on its opposing surface.
[0019]
The cover plate support piece 17 has a bent piece 33 substantially parallel to the connecting piece 11 connected to the base end of the engaging projection 26 having the above configuration at a substantially right angle, and a distal end of the bent piece 33. A projecting piece 35 projecting toward the rear surface 16 of the cover plate 6 is provided substantially at a right angle, and the tip of the projecting piece 35 is inclined forward from a base end side 36 toward a front end side 37. One piece 39 is continuously provided at a substantially right angle.
[0020]
As shown in FIG. 2, the cover plate support piece 17 having such a configuration is such that the engagement protrusion 26 is pushed into the engagement groove 25 by a required amount to engage the engagement surfaces 31 and 32. The support piece 39 is in contact with the rear surface 16 at the distal end side 37 and the base end side 36 is floating on the rear surface 16. With the floating state, the spring of the support piece 39 is Action is obtained.
[0021]
A shielding piece 41 for shielding the opening 40 of the groove 10 is provided integrally with the front part 22 of the first covering piece 5 via a bent part 42 so as to be openable and closable. In the present embodiment, a first engaging portion 43 as a ridge is provided on the rear surface of the shielding piece 41 in a state in which the shielding piece 41 extends in the length direction of the shielding piece 41 in the vicinity of the bent portion 42 in the present embodiment. When the shielding piece 41 is closed, as shown in FIG. 2, the first engagement portion 43 is provided on the front portion 13 of the second cover piece 9 on the groove 10 side. It can be in an engaged state with the second engaging portion 46 as the projected portion.
[0022]
As shown in FIG. 2C, a front end portion of the second engagement portion 46 is formed as an arc surface 47, and has an engagement surface 49 on the rear side. The first engaging portion 43 has, as a front end portion, an engaging surface 50 that can engage with the engaging surface 49.
[0023]
However, as the shielding piece 41 closes as shown in FIG. 3, the rear end portion 51 of the first engagement portion 43 presses the arc surface 47 of the second engagement portion 46, thereby As shown in FIG. 4, the second cover piece 9 is elastically deformed in a direction in which the inclination angle is reduced. When the shielding piece 41 is closed as shown in FIG. 2, the second cover piece 9 elastically returns, so that the first engagement portion 43 and the second engagement portion 46 are separated from each other. Then, the engaging portions 49 and 50 are engaged with each other, whereby the shielding piece 41 is held in a state where the opening portion 40 is shielded.
[0024]
Then, in a state where the shielding piece 41 shields the opening 40, as shown in FIG. 2, a portion 52 on the distal end side of the shielding piece 41 is an end of the lid plate 6 in a state where the inspection port 2 is closed. The edge portion 53 is supported from the front side, so that the edge portion 53 of the lid plate 6 is elastic between the tip portion 52 of the shielding piece and the support piece portion 39 of the lid plate support piece 17. It will be in a state of typical clamping.
[0025]
As shown in FIGS. 1 and 2, a tip of a tool such as a screwdriver is provided at the tip of the shielding piece 41 to release the engagement between the first engagement portion 43 and the second engagement portion 46. Are provided.
[0026]
In particular, in the present embodiment, as shown in FIG. 2, a protrusion 56 is provided on the front portion 13 of the second cover piece 9 on the side opposite to the groove 10 side. The tip 57 can function as a ruler for setting a cutting dimension when the cover plate 6 is formed by cutting a plate material such as a gypsum board as necessary, as described later.
[0027]
The inspection port frame body 59 shown in FIGS. 5 to 7 configured by using the frame material 1 having the above configuration is mounted in a state where the peripheral portion 60 of the inspection port 2 is covered, and has a required length. The cut upper, lower, left and right frame members 61, 62, 63, 65 are formed into a square or rectangular frame (in FIG. 5, a square frame) with the groove 10 facing forward. Have been.
[0028]
Explaining the specific configuration, the upper, lower, left, and right frame members 61, 62, 63, 65 have their both ends cut off obliquely at an angle of 45 degrees. As shown in FIG. 9, an L-shaped joining member 70 fitted into the rear groove 69 of the decorative piece 24 is joined and integrated with each other by means such as welding or bonding. A frame-shaped frame body 71 is formed.
[0029]
Then, the lid plate supporting piece 17 having the above-mentioned configuration is attached to the frame main body 71 with the engaging projections 26 being engaged with the engaging grooves 25. At this time, as shown in FIGS. An L-shaped cover plate support piece 17a is attached to a corner portion of the frame body 71, and a linear cover plate support piece 17b is attached between the adjacent cover plate support pieces 17a, 17a.
[0030]
As shown in FIG. 10, the L-shaped cover plate support piece 17a has the bent piece 33 and the protruding piece 35 connected and integrated in an L-shape, and constitutes both sides of the L-shape. The engaging projections 26 are protruded from end portions of the bent pieces 33. In addition, the support pieces 39, 39 project from the projecting pieces 35, 35 independently.
[0031]
As shown in FIGS. 6 and 7, the L-shaped cover plate support piece 17 a having the above-described configuration is configured such that the engagement protrusions 26, 26 at both ends thereof are pushed into the engagement grooves 25, 25, respectively. It is attached to the main body 71. The L-shaped cover plate supporting piece 17a thus configured also functions as a reinforcing member for reinforcing the corner portion of the frame main body 71.
[0032]
To close the inspection port 2 with the lid plate 6 using the inspection port frame 59 having the above-described configuration, the inspection port frame 59 is closed with the inspection port 2 as shown in FIGS. Then, the protrusion 23 of the decorative piece 24 is brought into contact with the front surface 75 of the edge portion of the inspection port, and in this state, the fixing portion 21 is fixed to the base portion 20 with a screw 76. When the inspection port frame 59 is attached in this manner, the shielding piece 41 is kept open as shown in FIG. In this state, since the second cover piece 9 is in an inclined state, the square opening frame portion 77 in which the second cover piece 9 is formed continuously in the circumferential direction is as shown in FIG. At the same time, it is widening toward the front end.
[0033]
As shown in FIGS. 11 and 5, the cover plate 6 is fitted in the opening frame portion 77, and the rear surface 16 is supported by a support piece 39 of the cover plate support piece 17. As shown in FIG. 2, the outer peripheral surface 7 of the cover plate 6 is perpendicular to the front surface 79 of the cover plate.
[0034]
The cover plate 6 may be formed by cutting a plate material such as a gypsum board into a square shape at a construction site. In this case, the tip 57 (FIG. 2) of the protrusion 56 provided at the front of the second cover piece 9 functions as a ruler, and the cutting dimensions are set as required, so that the cover plate with good dimensional accuracy can be obtained. Can be formed. 10, the vertical and horizontal cutting dimensions are set by the distance L1 between the tips 57 of the upper and lower projections and the distance L2 between the tips 57 of the left and right projections. As shown in FIGS. 7 and 8, the thickness of the cover plate 6 is such that the cover plate 6 is fitted into the square opening frame portion 77 through the front end opening 80 thereof and the rear surface 16 is formed as shown in FIGS. As shown in FIG. 8, when the support plate 17 is supported on the distal end side 37 of the support piece 39 of the cover plate support piece 17, the rear edge 81 of the outer peripheral surface 7 of the cover plate It is set so that it abuts on the outer surface 82 at the rear side, and the front edge 83 of the outer peripheral surface 7 is located slightly behind the protrusion 56.
[0035]
However, in order to close the inspection port 2 with the lid plate 6 having the above configuration, the lid plate 6 is fitted into a square opening frame 77 as shown in FIGS. The lid plate 6 fitted into the opening frame portion 77 has an inclined outer surface of the second cover piece 9 inclined at the rear end edge 81 of the outer peripheral surface 7 thereof (the groove 10 of the second cover piece 9). ) At the rear side thereof, and the front edge 83 of the outer peripheral surface 7 is located slightly behind the protrusion 56. A wedge-shaped groove portion 85 is formed between the outer peripheral surface 7 and the second cover piece 9 to increase the groove width toward the front end. In this state, the shielding piece 41 is closed. As shown in FIG. 3, the rear end portion 51 of the first engagement portion 43 is connected to the arc surface 47 of the second engagement portion 46. , Whereby the second cover piece 9 is elastically deformed in a direction to reduce its inclination angle as shown in FIG. When the shielding piece 41 is closed as shown in FIG. 2, the second cover piece 9 elastically returns, so that the first engagement portion 43 and the second engagement portion 46 are separated from each other. Thus, the engaging portions 49 and 50 are engaged with each other, whereby the shielding piece 41 is held in a state where the opening portion 40 is shielded.
[0036]
When the shielding piece 41 is closed, the front end portion 52 of the shielding piece covers the front surface 53a of the edge portion 53 of the cover plate, and the rear portion 86 of the front end portion is connected to the cover plate. 6 is pressed toward the support piece 39 of the cover plate support piece 17. This pressing is performed in a state where the support piece portion 39 is inclined and the front end side 37 is in contact with the rear surface 16 of the cover plate 6 and the base end side 36 is floating on the rear surface 16. Therefore, the pressing is performed elastically with the elastic deformation of the support piece 39. Therefore, the edge portion 53 of the cover plate 6 is stably and elastically clamped by the support piece portion 39 of the cover plate support piece 17 and the tip end portion 52 of the shielding piece 41 without rattling. Thus, as shown in FIG. 12, the lid 6 is kept in a stable closed state.
[0037]
When performing maintenance and inspection of wiring and piping through the inspection port 2, for example, the tip of a screwdriver is inserted into the groove 55 (FIG. 2) at the tip of the shielding piece 41 in the closed state, and the shielding piece is inserted. The first engaging portion 43 and the second engaging portion 46 are disengaged and the shielding piece 41 is opened. As a result, the square-shaped opening frame portion 77 returns to a flared state (a state in which the lid plate is fitted) toward the front end, so that the lid plate 6 can be easily removed.
[0038]
In the present embodiment, as described above, the amount of pushing of the engaging projection 26 into the engaging groove 25 can be set as required, so that the inspection port frame 59 according to the present embodiment can be set. In this case, for example, two types of cover plates having different thicknesses can be fitted into the opening frame 77 to close the inspection port 2. For this purpose, for example, when shipping the inspection opening frame, assuming that the thickness of the cover plate at the construction site is large, as shown in FIG. The pushing amount of the portion 26 is set to be small. When a thick cover plate is used at the construction site, the inspection plate 2 can be closed by fitting the cover plate 6 into the opening frame 77 as shown in FIG. On the other hand, when a thin lid plate is used, as shown in FIG. 13, the engagement plate 26 is sufficiently pushed into the engagement groove 25 as far as it will go, so that the lid plate 6 is The inspection port 2 can be closed by fitting it into the frame 77 and closing the shielding piece 41.
[0039]
[Other embodiments]
(1) FIG. 14 shows a state in which the first engaging portion 43 and the second engaging portion 46 are engaged and the shielding piece 41 is closed, A case is shown in which the provided protrusion 56 is configured to engage with the front surface 53a of the edge portion 53 of the cover plate 6 in a state where the inspection port 2 is closed. When configured in this manner, the lid plate 6 has the front side 53a of the edge portion and the projection 56 in addition to the engagement force between the first engagement portion 43 and the second engagement portion 46. , The cover plate 6 can be more stably closed when the shielding piece 41 is closed. In FIG. 14, the second cover piece 9 indicated by a dashed line indicates its free state.
[0040]
(2) The inspection port frame material and inspection port frame according to the present invention can be applied not only to the walls of a building but also to inspection ports formed on a ceiling.
[0041]
(3) The means for fixing the inspection port frame body to the peripheral portion of the inspection port according to the present invention is performed by nailing the fixing portion 21 extended to the first cover piece to the base portion 20. As in the conventional construction shown in FIG. 15, a means for fixing the bottom portion 87 of the groove portion 10 to the base portion 20 with a screw 89 may be employed.
[0042]
(4) The cover plate supporting piece 17 supporting the rear surface 16 of the cover plate 6 is provided on the main body member by the engaging means for pushing the engaging protrusion into the engaging groove, and a certain type of inspection port. When the thickness of the lid plate is one type in the frame, the lid plate support piece 17 may be provided integrally with the main body member as shown in FIG.
[0043]
(5) The inspection port frame 1 according to the present invention may be configured without the cover plate support piece 17. In this case, for example, as shown in FIG. 16, the rear surface 16 of the cover plate 6 is supported by the base portion 79. In the same figure, the frame member 1 is fixed to the base portion 79 at the bottom portion 87 of the groove portion 10 with a screw 89.
[0044]
【The invention's effect】
The present invention has the following excellent effects.
(1) According to the present invention, since the second cover piece constituting the main body member is configured as an inclined piece inclined toward the first cover piece side from the rear to the front, A gap can be formed between the outer peripheral surface and the second cover to allow the second cover to be elastically deformed in a direction to reduce the inclination angle and to escape. Thus, the operation of closing the shielding piece with the inspection opening closed with the lid plate can be performed by elastically deforming the second cover piece in a direction in which the inclination angle becomes smaller. Therefore, the shielding piece can be closed without difficulty, and the second cover piece elastically returns after the closing, so that the first engagement portion provided on the shielding piece and the second cover piece are provided. A reliable engagement state with the second engagement portion provided in the first and second shielding portions can be obtained, and the shielding piece can be held in the shielding state. Thus, the lid plate in the closed state can be stably held between the tip end portion of the shielding piece and the lid plate support piece. In addition, when the cover plate is removed for maintenance and inspection of wiring, piping, and the like, the shielding piece can be easily opened by elastic deformation of the second cover piece.
[0045]
(2) Since the cover plate is fitted into the inside of the opening frame portion in which the inclined second cover piece is formed continuously in the circumferential direction, the rear edge of the outer peripheral surface of the cover plate is inclined. The second cover piece can be brought into contact with the inclined outer surface of the second cover piece, and the cover plate can be held in a closed state by closing the shielding piece in this state. Therefore, as in the case of the conventional inspection opening frame body in which the second cover piece protrudes in the front-rear direction (is not inclined), due to a manufacturing error of the cover plate, the cover plate in the closed state may be vertically or horizontally left and right. The problem of rattling in the direction does not occur.
[0046]
(3) In the case where a projection is provided on the front portion of the second cover piece on the side opposite to the groove portion side of the main body member, and the tip of the projection portion cuts a plate material as required to form the cover plate. When configured to function as a ruler to set its cutting dimensions, when the cover plate is formed by cutting the plate material as required by on-site work, by setting the cutting dimensions using the ruler It is easy to form a cover plate of a predetermined size that can be fitted inside the opening frame portion.
If such a protrusion is not provided, the opening frame portion formed by the circumferential continuation of the second cover piece is inclined so as to widen toward the front end, There is a risk that the cutting dimension may be erroneously set using the divergent tip as a ruler. When the cover plate is formed by cutting in this manner, the cover plate cannot be inserted into the opening frame portion because the dimensions do not match. The protrusion is useful for eliminating such a problem.
[0047]
(4) In a state where the first engagement portion and the second engagement portion are engaged with each other and the shielding piece is closed, a projection provided on a front portion of the second cover piece is closed. In a case where it is configured to engage with the front surface of the edge portion of the lid plate in the state, the engagement force between the first engagement portion and the second engagement portion provides the front surface of the edge portion with the engagement force. Since the engaging force with the projection is added, a more stable lid closing state of the lid plate can be obtained when the shielding piece is closed. Thus, even when the inspection port frame according to the present invention is attached to the inspection port provided on the ceiling, the lid plate can be stably held.
[0048]
(5) When the frame material for an inspection port according to the present invention includes a cover plate support piece that supports the rear surface of the cover plate in a closed state, the support member supports the rear surface of the cover plate. When the supporting piece portion is inclined forward from its proximal end toward the distal end, contacts the rear surface at the distal end, and is configured so that the proximal end is floating on the rear surface. A state where the support piece portion is inclined to contact the rear surface of the lid plate by a spring action, so that when the shielding piece is closed, a tip portion thereof elastically presses the lid plate backward. Become. Therefore, the cover plate can be stably held between the cover plate support piece and the shielding piece without rattling, and the stability of the cover plate in the closed state can be improved. This is because the conventional inspection port frame body which holds the lid plate by holding the lid plate by clamping the edge portion of the lid plate between the back surface of the base portion having a fixed and non-deformable portion and the front end portion of the shielding piece. This is an effect that cannot be achieved.
[0049]
(6) A configuration in which an engagement groove is formed between projections projecting from the rear portion of the main body member in a facing state, and an engagement projection that can be pushed into the engagement groove is provided on the cover plate support piece. In this case, the cover plate support piece can be stably attached to the main body member by the engagement between the engagement protrusion and the engagement groove, and the amount of pushing of the engagement protrusion into the engagement groove can be improved. According to the required setting, the distance between the cover plate supporting piece and the closed shielding piece can be adjusted, whereby a plurality of types of cover plates having different thicknesses can be held.
[0050]
(7) When the first cover piece constituting the main body member has an extension piece extended rearward at a rear portion thereof, the extension piece forms the engagement groove and fixes the inspection port frame body. Can be achieved with a simple structure.
[0051]
(8) When the inspection port frame is fixed to the peripheral portion of the inspection port with the fixing portion as the rear portion of the extension piece, as in the above-described conventional inspection port frame, the groove portion closed by the shielding piece is used. Unlike the case where the inspection port frame is fixed with screws at the bottom part, the width of the groove of the main body member can be set small, thereby reducing the edging width for rimming the peripheral part of the inspection port and reducing this edging. This makes it less noticeable and improves the appearance of the inspection port.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a frame material according to the present invention.
FIG. 2 is a cross-sectional view showing the state of use.
FIG. 3 is a cross-sectional view illustrating an operation when closing a shielding piece.
FIG. 4 is a cross-sectional view illustrating an operation when the shielding piece is closed.
FIG. 5 is a front view showing the inspection port frame according to the present invention in a used state.
FIG. 6 is a rear view showing the inspection port frame in a used state.
FIG. 7 is a partial perspective view showing a use state of the inspection port frame.
FIG. 8 is a cross-sectional view showing a state in which a lid plate is fitted inside the opening frame portion of the inspection port frame.
FIG. 9 is a perspective view showing a state in which ends of adjacent frame members are joined and integrated by an L-shaped joining member.
FIG. 10 is an exploded partial perspective view of the inspection port frame.
FIG. 11 is a cross-sectional view showing a state in which a lid plate is fitted into the inspection port frame.
FIG. 12 is a cross-sectional view showing a state in which a cover plate is fitted into the inspection port frame and the shielding piece is closed.
FIG. 13 is a sectional view showing another use state of the frame material according to the present invention.
FIG. 14 is a partial sectional view showing another embodiment of the frame member according to the present invention in a state of use.
FIG. 15 is a sectional view showing another state of the frame member according to the present invention in a used state.
FIG. 16 is a sectional view showing another embodiment of the frame material according to the present invention in a used state.
FIG. 17 is a sectional view showing a conventional frame member in a used state.
[Explanation of symbols]
1 Frame material
2 Inspection port
3 Inner peripheral surface of inspection port
5 First cover piece
6 lid plate
7 Peripheral surface of lid plate
9 Second cover piece
10 groove
11 Connecting piece
15 Body members
16 Rear of lid
17 Lid support
25 engagement groove
26 Engagement protrusion
39 Support piece
41 shielding piece
42 Bend
43 first engagement portion
46 Second engaging portion
56 protrusion
57 Tip of protrusion
59 Inspection port frame
60 Peripheral part of inspection port

Claims

A frame member attached to a peripheral portion of an inspection port formed on a wall or a ceiling, wherein the first cover piece covers an inner peripheral surface of the inspection port and an outer peripheral surface of a lid plate that closes the inspection port. A second cover piece is integrated at a rear portion so as to form a groove with an open front end therebetween, and the second cover piece moves toward the first cover piece side from a rear portion toward a front portion. A main body member having an inclination is provided, and a shielding piece for shielding an opening of the groove of the main body member is integrally provided at a front portion of the first cover piece so as to be openable and closable via a bent portion, Further, as the shielding piece closes, the first engaging portion provided on the rear surface of the shielding piece elastically deforms the second covering piece in a direction to decrease the inclination angle, and the shielding piece closes. When the second cover piece is elastically returned, the first engagement portion and the groove of the second cover piece are returned. Is engaged with the second engaging portion provided on the side, whereby the shielding piece is held in a state where the opening is shielded, and the distal end portion of the shielding piece is connected to the inspection port. A frame material for an inspection opening, wherein an edge portion of the lid plate in a state where the lid is closed is supported from the front side.

A frame member attached to a peripheral portion of an inspection port formed on a wall or a ceiling, wherein the first cover piece covers an inner peripheral surface of the inspection port and an outer peripheral surface of a lid plate that closes the inspection port. A second cover piece is integrated at a rear portion so as to form a groove with an open front end therebetween, and the second cover piece moves toward the first cover piece side from a rear portion toward a front portion; A cover member for supporting a rear surface of the cover plate in a closed state provided at a rear portion of the body member, and a shielding member for shielding an open portion of the groove portion; A piece is integrally provided at a front portion of the first cover piece via a bent portion so as to be openable and closable, and a first engagement portion provided on a rear surface of the shield piece as the shield piece closes. Elastically deforms the second cover piece in a direction to reduce the inclination angle, and when the shield piece is closed, When the second cover piece elastically returns, the first engagement portion and the second engagement portion provided on the groove side of the second cover piece are engaged with each other. The shield piece is held so as to shield the open portion, and the front end portion of the shield piece supports the front edge portion of the lid plate in a state where the inspection opening is closed from the front side. A frame material for an inspection port, which is characterized in that:

In the front of the second cover piece, a protrusion is provided on the side opposite to the groove side, and the tip of the protrusion is formed when the cover is formed by cutting a plate material as required. The inspection port frame material according to claim 1, wherein the frame material functions as a ruler for setting a cutting dimension.

A protrusion is provided on a front portion of the second cover piece on a side opposite to the groove portion, and the protrusion is provided in a state where the first engagement portion and the second engagement portion are engaged. The frame member for an inspection port according to claim 1 or 2, wherein the portion engages with a front surface of an edge portion of the lid plate in a state where the inspection port is closed.

The support piece portion of the cover plate supporting piece, which supports the rear surface of the cover plate, is inclined forward from its base end side toward the front end side, contacts the rear surface at the front end side, and the base end side is the rear surface. The shielding piece in the closed state is configured to elastically press the cover plate toward the rear by the spring action of the supporting piece part accompanying the floating state. The frame material for an inspection port according to claim 2, characterized in that:

At the rear part of the main body member, projecting pieces are provided so as to face each other at a required interval in the width direction of the groove, and an engaging groove is formed between both projecting pieces, and the lid plate supporting piece is An engaging protrusion which can be pushed into the engaging groove is provided, and in a state where the engaging protrusion is pushed in a required amount, the cover plate support piece is dropped by engagement of the engaging protrusion with the engaging groove. The support plate portion of the cover plate supporting piece, which supports the rear surface of the cover plate, is inclined forward from the base end side toward the front end side, and the rear surface is formed at the front end side. And the base end side is in a floating state on the rear surface, and by the spring action of the supporting piece portion accompanying the floating state, the shielding piece in the closed state directs the lid plate backward. The frame material for an inspection port according to claim 2, wherein the frame material is configured to be elastically pressed.

The first cover has an extension extending rearward at a rear portion thereof, and a front portion of the extension forms one of the protruding pieces, and a rear portion of the extension has a rear portion. 7. The frame member for an inspection port according to claim 6, wherein the inspection port is a fixing portion to a peripheral portion of the inspection port.

The frame material for an inspection port according to any one of claims 1 to 7 is framed in a square shape or a rectangular shape with the groove portion facing forward, and the shielding pieces of the upper, lower, left, and right frame members can be independently opened and closed. The cover plate can be fitted through an opening at a front end thereof into an opening frame formed by the inclined second cover piece continuously in the circumferential direction. In a state where the engaging portion and the second engaging portion are engaged and the shielding piece is closed, the edge portion of the lid plate in a state where the inspection opening is closed is supported from the front side, An inspection port frame, wherein a rear end edge of an outer peripheral surface of the lid plate is configured to contact an inclined outer surface of the inclined second cover piece.